Vibrating motion-producing mechanism



Get. 2, 1928.

' E. DEISTER VIBRATING MOTION PRODUCING MECHANISM Filed May 24, 1926 IINVENTOR. E2411: g Be in Z52" BY 24A; 7//. A w

A TTORNE Y.

Patented st. 2, 1928.

YEW-(IL um or 110st ime; re al;

p VIBRATIN'G MorimmrnonuoinG ivrncnanrsm.

Application filed May 24, 1926. Serial No. 111,224Q

' Theinvention relates to mechanismsfor. producing vibratory motion. ,7

The object of the invention is to provide a simple and eflicient mechanism by which to produce a vibratory movement in the object to which it may be connected, the mechanism being adjustable in novel man-' ner to effect various degrees of vibration. The invention consists of two adjacent unbalanced members or off-center weights, one secured to a revoluble member and the other revolubly mounted on the revoluble member and adaptedto be secured thereto in various peripherally adjusted positions.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a fractional view of a shaft and the unbalanced members thereon shown in vertical section; Fig. 2 a side elevational View of the other unbalanced members; Fig. 3 a side elevational view of the other un-- balanced member; Fig. 4 a plan view of a vibrating screen illustrating the application of the invention and Fig. 5 a sideview of the screen; I In the illustrative embodiment of theinvention the mechanism comprises a shaft, 1 that will be revolubly supported and two members 2 and 3. -A portion 2 of* the.

. the shaft or the key 5.

member 2 is materially thickerthan the p0rtion 2 thereof that is diametrically opposite, thus forming an unbalanced condition in the member. Similarly the portion3 of the member 3 is thicker than the portion 3 thereof. and forthe. same purpose.

The members 2 and 3 are adapted to be mounted, on the shaft 1. A key-way 4 is. formed in the member 2 for the reception of a key 5 that is disposed in a key-way 6 formed in the shaft; The key 5'locks the member 2 to the shaft against rotation thereon and to assure that the member will not move longitudinally on the shaft, I provide a set screw 7 that is insertedin the member and is caused to firmly engage the face of One end of the key 5 projects from the member 2 and is adapted to be engaged by any one of the series of notches or sockets S that are formed in the side faceof the member 3. This member 3'also carries" a set screw 9 for positively lockingsaid member to the shaft, which member is adjusted thereon by loosening the set screw 9, then sliding the member 3 along the shaft to discharge it from the key 5, then rotating the member until the selected: notch of socket Sthereinis in alinementwiththe key whereupon the member 3 is moved toward the member 2 to engage the key in the jselected notch or socket 8 and the set screw. In this manner any- 9 is then tightened;

selected peripheral adjustment of the memy H her '3 may be readily accomplished.

When the shaft is rotated at proper speed.

by a belt leading froma source of power and engaged on either. member 2 or .3 or otherwise arranged to drive the shaft the unbalanced condition of the members will' cause the shaft to vibrate as it rotates and also any obgectthat is connected to it.

In Figs. 1 and 5 the shaft 1 is mounted in] two bearings'lO that are mounted on two 1 elastic members 11 respectively, the mem-j hers 11 being supported on the frame 12 of a screen andsuitably' connected to the:

screening medium 13 that is also supported on the frame. I show two sets of the members 2 and 3 and the belt from an electric motor or other source of power may be (2011- nected to any one of the same. As the shaft.

rotated the members causeit-, the elastic members and the screening medium to vibrate positively and most effectively. :I make no further reference or claim to the application of the mechanism to the screening mechanism since {have described the same in an application filed concurrently herewith. I

It is a simple matter to adjust the member to secureany desireddegree of-vibrationof. the shaft and of the parts connected thereto and" the form of the members may be such as the user desires. form the member Qwith its periphery concentric with the shaft so that said member may be used as a .pulley'to drive the shaft.

The mechanism is adaptable to various devices where a vibrating movement is desired. I i

Wh/atl claim is: I

1. A mechanism to produce vibratory motioncomprising a revolubly mounted shaft, 'a pair otunbalanced members on the shaft one of which is secured to the shaft, a key I prefer to I on the shaft and adapted to engage. the? other unbalanced member at any one of a plurality of peripherally'spaced points.

2. A mechanism to produce vibratory motion comprising a revolubly mountedshaft, an unbalanced member secured to the shaft,

a key on the shaft and a second unbalanced memhet an the shaft hlvi ng 'ln annular series of sockets in one face adapted to be enga ed selectively by thekey, selection of e la soc et being accomplished by rotating the 5 said member on the shaft and means to lock the latter member in peripherally adjusted position. t

3. A mechanism to produce vibratory mo- Hon comprising a. revolubl mounted shaft,

.j a pair of unbalanced mem ers on the shaft member adapted to engage. the other unbalanced membernt any one of a plurality of peripherally spaced points for controlling peripheralv adjustment of said unbalanced member on the shaft.

In witness whereof I have hereunto signed my name this 20th day of May 1926.

EMIL DEISTER. r 

